package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.google.gson.JsonObject;
import com.sky.constant.MessageConstant;
import com.sky.dto.UserLoginDTO;
import com.sky.entity.User;
import com.sky.exception.LoginFailedException;
import com.sky.mapper.UserMapper;
import com.sky.properties.WeChatProperties;
import com.sky.service.UserService;
import com.sky.utils.HttpClientUtil;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.time.LocalDateTime;
import java.util.HashMap;

@Service
@Slf4j
public class UserServiceImpl implements UserService {
    public  static  final String WX_LOGIN="https://api.weixin.qq.com/sns/jscode2session";
    @Autowired
    private WeChatProperties weChatProperties;
    @Autowired
    private UserMapper userMapper;
/*
微信登录
 */
    @Override
    public User wxlogin(UserLoginDTO userLoginDTO) {
        //调用微信接口服务获得当前用户的openid
        String openid = getopenid(userLoginDTO.getCode());
        //判断openid是否为空
        if(openid==null)
        {
            throw  new LoginFailedException(MessageConstant.LOGIN_FAILED);
        }
        //判断用户是否存在在用户表
        User user = userMapper.getByopenid(openid);
        if (user==null)
        {
           user=user.builder().openid(openid).createTime(LocalDateTime.now()).build();
            userMapper.insert(user);
        }

        return user;
    }

    public String getopenid(String code)
    {
        //调用微信接口服务获得当前用户的openid
        HashMap<String,String>  map= new HashMap<>();
        map.put("appid",weChatProperties.getAppid());
        map.put("secret",weChatProperties.getSecret());
        map.put("js_code",code);
        map.put("grant_type","authorization_code");
        String json = HttpClientUtil.doGet(WX_LOGIN,map);
        JSONObject jsonObject = JSON.parseObject(json);
        String openid=jsonObject.getString("openid");
        return  openid;
    }

}
